自由地表-地下水剖面方程的适用性

THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY Pub Date : 1900-01-01 DOI:10.5917/JAGH1959.19.48

O. Iida

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引用次数: 0

摘要

本文描述了在不透水层上表达自由地表地下水剖面的一组方程的适用性。理论稳定自由地表-地下水剖面由式(5)、(6)、(7)和式(10)给出。非定常剖面由式(3)导出有限差分式(17)给出，式(17)中的步长必须满足条件(23)。自由地表-地下水剖面的理论方程与采用Re<4和y<0.1模型砂坡得到的实验数据基本一致。Re为雷诺数，y为平均水力梯度，由式(26)可知。

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Applicability of Equations expressing Free-Surface-Groundwater Profiles

This paper describes the applicability of the set of equations exprssing free-surfacegroundwater profiles over an impermeable layer.
The theoretical steady free-surface-groundwater profiles are given by equation (5), (6), (7) and (10). The unsteady state profile is given by the finite difference equation (17) which was derived from equation (3). The steps in equation (17) must satisfy condition (23).
The theoretical equations for free-surface-groundwater profiles satisfied the experimental data which were obtained by using a model sand slope for Re<4 and y<0.1. Re is Reynolds number and y is an average hydraulic gradient by equation (26).

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THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY

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